Year annual % growth 1961 2.2134929966087356 1962 2.50797872340425 1963 5.453000544846006 1964 7.047035595003038 1965 4.998391137465802 1966 2.9315675705256155 1967 5.116645046041299 1968 4.963685285965738 1969 5.319230954560794 1970 6.121179124212489 1971 3.883197958163038 1972 3.6019173704633545 1973 4.697677399713186 1974 6.290150404995387 1975 4.843395092170283 1976 0.7707995715109774 1977 5.307307300486201 1978 1.9609936650295339 1979 1.5031462307108825 1980 1.791006515024577 1981 3.2576281076764673 1982 5.569105207428635 1983 2.4060675727455134 1984 1.0759995157864495 1985 0.39413479518873373 1986 4.951807718898692 1987 2.022996701102315 1988 3.2025928645582837 1989 4.658249463906287 1990 4.327603829671517 1991 0.9961260516286643 1992 2.3684134411078333 1993 1.904360337490374 1994 2.1547826235326113 1995 4.405731501335168 1996 3.3775339003217653 1997 2.8603815776492922 1998 5.1045047823584895 1999 5.562821955701395 2000 4.206759901623627 2001 3.318325693967779 2002 2.9729265946577357 2003 4.283859999419022 2004 5.311807747510272 2005 4.5399430627771125 2006 3.2882480388096695 2007 5.281573926048182 2008 4.803662965983605 2009 0.3028628248735572 2010 3.5081690304918993 2011 4.052490602561505 2012 2.880542708436991 2013 1.9150949347126698 2014 2.2835868932820063 2015 2.632085871070359 2016 2.6112608597812113 2017 2.4298891787428545 2018 2.749311176287449 2019 1.6127638007139353 2020 -3.322447159371251 2021 0.9108887046651404 2022 4.2777062322902 2023 5.096290454050106